I manually post the link of the blog entry to a Facebook Page. When I attach the link, I have an option to choose the thumbnail to display on FB page. Since yesterday, this functionality seems to be broken. I only get the W wordpress logo as thumbnail. Is it a WordPress problem or Facebook problem ? How do I get around this problem ? I have tried adding links from other sites and it seemed to give me the ability to show thumbnail so I am suspecting it's a WordPress problem. Please help.
The blog I need help with is saifalikhanonline.wordpress.com.